An expression commonly mistaken with "what's the haps", What is you up to is the complete opposite. The expression simply means to wonder as to what activities another individual is partaking in at any given moment.
brotha:YO, what is you up to
hommie:just chillin with some peeps.
brotha: fly!
What did you think was gonna pop up? THINK ABOUT HOW TO MAKE PROGRESS IN LIFE! THINK ABOUT WHAT YOU WILL DO! Learn some Spanish or meditate. Go for a jog come on, you got this!
Bob, (Searches "I don't know what to look up, then sees this) "I WILL FIX MY LIFE STEP BY STEP!